Circumnuclear Star Formation in M100

Authors: Ryder, S.D.1; Knapen, J.H.2

Source: Astrophysics and Space Science, Volume 276, Numbers 2-4, 2001 , pp. 405-412(8)

Publisher: Springer

Buy & download fulltext article:

OR

Price: $47.00 plus tax (Refund Policy)

Abstract:

Near-infrared (JHK) images of the nucleus of the barred spiral galaxy M100 (NGC 4321) have been obtained using a high-bandwidth tip-tilt secondary and fast guider system on the 3.8 m United Kingdom Infrared Telescope (UKIRT). The resulting images, with a resolution of 0.34″ at K, reveal for the first time a host of compact `knots', which appear to be the result of a recent burst (or bursts) of star formation. Confirmation of this comes from K-band spectroscopy of these knots with CGS4 on UKIRT, which shows Brγemission and CO absorption features. A comparison with starburst evolutionary models suggests ages for these knots of between 17 and 27 Myr, and a stellar population dominated by late-type supergiants.

Document Type: Regular Paper

Affiliations: 1: Joint Astronomy Centre, Hilo, HI 96720, U.S.A. E-mail: sryder@jach.hawaii.edu 2: University of Hertfordshire, Dept. Physical Sciences, Hatfield AL10 9AB, U.K. E-mail: knapen@star.herts.ac.uk

Publication date: January 1, 2001

Related content

Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content

Text size:

A | A | A | A
Share this item with others: These icons link to social bookmarking sites where readers can share and discover new web pages. print icon Print this page